Testing Scalar-Tensor Gravity using LISA
Abstract
Gravitational waves from neutron stars or white dwarfs spiraling into black holes are expected to be detected by NASA's Laser Interferometric Space Antenna (LISA). The waveform of these gravitational waves will be modified in scalar-tensor theories of gravity by the introduction of an additional term in the gravitational-wave phase inversely proportional to the coupling parameter, ω. Stringent lower bounds on ω can be found by using the technique of matched filtering to compare a predicted signal with an observed signal. We calculate possible bounds employing recent models for the LISA instrumental noise density the LISA International Science Team (LIST). We analyze the dependence of these bounds on the LISA configuration by varying such parameters as arm-length and laser power.
- Publication:
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APS April Meeting Abstracts
- Pub Date:
- April 2003
- Bibcode:
- 2003APS..APR.K9013Y